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(No Model.) V 2 Sheets-Sheet 1.

J.PLATT. I

APPARATUS FOR GUTTING PILED FABRICS. No. 603,224. v Patented Apr.26,1898

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J. PLATT. V APPARATUS FOR GUTTINGPILED FABRICS.

No. 603,224. Patented Apr. 26,1898- a: NORRIS vn zas L0,, wmmJ-mu,wAsmNGroM; m. c.

UNITED STATE PATENT OFFICE.

JOHN PLATT, OF WARRINGTON, ENGLAND.

APPARATUS FOR CUTTING PILED FABRICS.

SPECIFICATION forming part of Letters Patent No. 603,224, dated April26, 1898. Application filed November 10, 1897- Serial No. 668,066. (Nomodel.) Patented in England October 8, 1897, No. 23,068.

To all whom it may concern.-

Be it known that I, JOHN PLATT, a subject of the Queen of Great Britain,residing at Lythgoes lane, Warrington, in the county of Lancaster,England, have invented certain new and useful Improvements in Connectionwith Apparatus for Cutting Piled Fabrics, (for which I have obtained apatent in Great Britain, No. 23,068, dated October 8, 1897,) of

which the following is a specification.

My invention relates to improvements in connection with apparatus forcutting the pile less complicated combinations of mechanism,

including some device which comes into contact with the cloth in theevent of the knife piercing the cloth.

My invention is intended to effect the release of the knife from thetraversing power in the event of any increase in the normal resistanceoffered by the actual cutting of the pile of the cloth. Thus the knifewill bereleased in the event of its piercing the cloth, or it may bereleased without the cloth being pierced if the cutting edge of theknife becomes dull, and thus offers increased resistance, or if theguide becomes broken or bent,

7 so as not to be capable of guiding the knife,

or if the knife meets with any obstruction which in the ordinary coursewould break it, or if the knife and guide turns out of the race into theuncut faceof the cloth.

My invention enables an ordinary fustiancutters knife and guide freefrom any attached mechanism whatever to be used with safety, thusfacilitating the work of the operator.

In carrying my invention into effect I prefer to employ an ordinaryknife and guide placed on a traveling carriage, which I attach to theusual reciprocating cord or the like by an attachment which is strongenough cotton h, Figs. 3 and 4, or the like.

to drive the knife and out the pile, but is at the same time weak enoughto break or yield and so disconnect the carriage from the reciprocatingcord, which moves it when any increase in the normal resistance occurs,the result being that the connection is broken or severedinstead of thecloth being injured.

- In the accompanying two sheets of drawings, Figure 1 is a sidesectional elevation, and Fig. 2 a part plan, of a frame or table andapparatus to which my invention is applied for cutting piled fabrics.Figs. 3 and 4 are a longitudinal sectional elevation and plan, re-

spectively, of the knife-carriage, illustrating one mode of attachment;and Figs. 5 and 6 are similar views to Figs. 3 and 4, respectivelyillustrating another mode of attachment.

In'the views, a designates the piled fabric to be cut,'which isstretched by means of two tightening-rollers b (one only of which isshown) over the spear or beam 0 at each end of the cutting-frame, and dis the traveling cord, which receives a reciprocating motion by means ofa pair of pulleys e, (of which one is-shown,) mounted one at each end ofthe frame and driven by hand or power,preferabl y by hand, in anyconvenient manner.

Instead of attaching the knife-carriage f firmly to the traveling cord dI pass the cord through'a longitudinal groove f in. the carriage andkeep it in position by rings or staples g, fixed to the carriage in sucha man- 'ner that the cord may run freely through the groove f andstaples 9 without obstruction. I then attach the carriage f to thetraveling cord (1 by a thread of ordinary thin sewing- The cotton threador equivalent his only of sulficient strength to actuate the carriage fwith the knife and guide 71 when the knife is cutting the pile of thecloth a in the ordinary manner, but is weak enough to break if more thanthe normal resistance is encountered.

When the thread h breaks, the carriage f, on which the knife c' isplaced, ceases to be actuated by the traveling cord 01, but remainsstationary on the cloth while the cord f travels freely through thegroove f.' The carriage and knife beingtthus arrested any damage to thecloth is prevented. The cotton thread h or its equivalent may beproportioned in strength to the strength of the pile which it has toout.

In the case of corduroys or similar strong fabrics a thread of linen orthe like may be required, but for ordinary velvets and velveteens athread of sewing-cotton is sufiicient.

In Figs. 5 and 6 I show another mode of attaching the carriage f to thetraveling cord (1. In this case an arm j is pivoted at j to the carriagef and is retained normally in the position shown in Fig. 6 by means of aweak spring 7a, secured on the carriage. A threadwire or equivalent h isfirmly attached at one end to the traveling cord d at a point in frontof the carriage and its other end is formed into a loop which is placedover the pivoted arm j. In the event of the knife 1', which is placed onthe carriage f, meeting with more than normal resistance the spring 70yields and allows the free end of the arm j to move forward, when theloop of the thread or equivalent h slips off the end of the arm j, andso disconnects the carriage f with the knife 2' from the traveling cord(1.

Although I have only shown and described twoforms of attachment, it willbe obvious to any practical man familiar with the art that many otherforms might be employed without departing from the nature of myinvention, which consists, essentially, in the use and application of afrangible attachment which will break or yield in the event of moreresistance being met with than is suffieient to cut the pile withoutinjury to the cloth.

Inorder to prevent the carriage f from slipping forward on thereciprocating cord (1, a

knot may be tied on the said cord with or without a small washer mbehind it and large enough not to enter the groove f in the carriage.

Havingnow particularlydescribed and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. The combination with a knife and guide, and means foractuating the same, of a frangible attachment to the actuating means,said frangible attachment being strong enough to actuate the knife whencutting under normal conditions, but weak enough to allow the knife tobecome detached when more than the normal resistance is encountered,substantially as and for the purposes hereinbefore set forth.

2. The combination with a knife and guide, knife-carriage, and means forreciprocating the same, of afrangible attachment connected at one end tothe actuating means and at the other end to the traveling-knifecarriage, substantially as and for the purposes hereinbefore set forth.

3. The combination with a'traveling-vknife carriage and means foractuating the same, of afrangible attachment connected at one end to thecarriage and at the other end to the actuating means, substantially asand for the purposes hereinbefore set forth.

In witness whereof I have hereunto setmy hand in presence of twowitnesses.

J OIIN PLATT.

Vitnesses:

H. B. BARLoW, HERBERT R. ABBEY.

